Hello Ankit

Admission to Indian Institute of Space Science and Technology is done on the basis of ranks in the JEE Advanced exam. The cutoff varies every year depending on various factors. I can provide you the previous year cutoff for reference and to have an idea about the rank required

For B.Tech Aerospace Engineering, the closing cutoff percentage was 34.17% for General Category and for B.Tech Electronics and Communication Engineering, the closing cutoff percentage was 33.05%.

You can go through the link below to check the official cutoff

https://www.iist.ac.in/admissions/undergraduate

You can check the 2017 cutoff data, opening and closing ranks along with the percentage is also mentioned for the year 2017.

Good Luck!

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